Ideal ALT blood levels total less than 20 units per liter of serum for women and less than 30 units for men. I typically recommend that my patients continue to lose weight until they reach these target levels. Although studies show that liver enzymes may temporarily rise immediately following diet-induced weight loss in women, these increases, when transient, are considered benign, with no cause for alarm.17 It’s also important to note that intense exercise can also increase levels of these enzymes. Alanine aminotransferase (ALT):18 Male: 29 to 33 units/L Female: 19 to 25 units/L Aspartate
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